return to home page Computational Chemistry Comparison and Benchmark DataBase Release 22 (May 2022) Standard Reference Database 101 National Institute of Standards and Technology
You are here: Calculated > Energy > Optimized > Energy

All results from a given calculation for H2OHCOOH (Water formic acid dimer 2)

using model chemistry: B3LYPultrafine/aug-cc-pVTZ

19 10 17 12 22

States and conformations

State Conformation minimum conformation conformer description state description
1 1 yes C1 1A
Energy calculated at B3LYPultrafine/aug-cc-pVTZ
 hartrees
Energy at 0K-266.318292
Energy at 298.15K-266.322012
Counterpoise corrected energy-266.318188
CP Energy at 298.15K-266.321916
Counterpoise optimized geometry corrected energy 
CP opt. Energy at 298.15K 
Nuclear repulsion energy116.533879
The energy at 298.15K was derived from the energy at 0K and an integrated heat capacity that used the calculated vibrational frequencies.
Vibrational Frequencies calculated at B3LYPultrafine/aug-cc-pVTZ
Mode Number Symmetry Frequency
(cm-1)
Scaled Frequency
(cm-1)
IR Intensities
(km mol-1)
Raman Act
4/u)
Dep P Dep U
1 A 3876 3750 100.52      
2 A 3713 3593 48.93      
3 A 3690 3570 293.40      
4 A 3076 2976 15.33      
5 A 1787 1729 389.65      
6 A 1641 1588 104.22      
7 A 1405 1359 4.41      
8 A 1312 1269 16.16      
9 A 1141 1104 264.80      
10 A 1065 1030 2.24      
11 A 684 662 144.63      
12 A 639 618 50.16      
13 A 499 483 69.34      
14 A 354 342 155.97      
15 A 161 156 8.33      
16 A 66 64 15.90      
17 A 41 40 14.90      
18 A 19 18 106.16      

Unscaled Zero Point Vibrational Energy (zpe) 12583.9 cm-1
Scaled (by 0.9675) Zero Point Vibrational Energy (zpe) 12174.9 cm-1
See section III.C.1 List or set vibrational scaling factors to change the scale factors used here.
See section III.C.2 Calculate a vibrational scaling factor for a given set of molecules to determine the least squares best scaling factor.
Rotational Constants (cm-1) from geometry optimized at B3LYPultrafine/aug-cc-pVTZ
ABC
0.98700 0.08646 0.07950

See section I.F.4 to change rotational constant units
Geometric Data calculated at B3LYPultrafine/aug-cc-pVTZ

Point Group is C1

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
H1 -1.771 0.346 -0.005
O2 -2.490 -0.303 -0.013
O3 0.158 0.834 -0.001
H4 -3.301 0.203 0.078
C5 0.740 -0.219 0.006
O6 2.071 -0.353 -0.000
H7 0.253 -1.199 0.018
H8 2.465 0.534 -0.012

Atom - Atom Distances (Å)
  H1 O2 O3 H4 C5 O6 H7 H8
H10.96901.98961.53962.57383.90452.54604.2395
O20.96902.88200.96063.23134.56102.88555.0248
O31.98962.88203.51751.20372.25122.03552.3260
H41.53960.96063.51754.06425.40143.82115.7762
C52.57383.23131.20374.06421.33731.09421.8819
O63.90454.56102.25125.40141.33732.00530.9706
H72.54602.88552.03553.82111.09422.00532.8101
H84.23955.02482.32605.77621.88190.97062.8101

picture of Water formic acid dimer 2 state 1 conformation 1
More geometry information
Calculated Bond Angles
atom1 atom2 atom3 angle atom1 atom2 atom3 angle
H1 O2 H4 105.859 H1 O3 C5 104.715
O2 H1 O3 152.130 O3 C5 O6 124.650
O3 C5 H7 124.630 C5 O6 H8 108.210
O6 C5 H7 110.720
Electronic energy levels
Charges, Dipole, Quadrupole and Polarizability
Charges from optimized geometry at B3LYPultrafine/aug-cc-pVTZ Charges (e)
Number Element Mulliken CHELPG AIM ESP
1 H 0.272      
2 O -0.413      
3 O -0.490      
4 H 0.150      
5 C 0.076      
6 O -0.289      
7 H 0.516      
8 H 0.180      


Electric dipole moments
Electric dipole components in Debye
(What's a Debye? See section VII.A.3)
  x y z Total
  1.702 0.850 0.156 1.909
CHELPG        
AIM        
ESP        


Electric Quadrupole moment
Quadrupole components in D Å
Primitive
 xyz
x -19.254 -0.948 -0.619
y -0.948 -25.050 0.032
z -0.619 0.032 -24.921
Traceless
 xyz
x 5.731 -0.948 -0.619
y -0.948 -2.962 0.032
z -0.619 0.032 -2.769
Polar
3z2-r2-5.538
x2-y25.796
xy-0.948
xz-0.619
yz0.032


Polarizabilities
Components of the polarizability tensor.
Units are Å3 (Angstrom cubed)
Change units.
  x y z
x 6.083 -0.242 -0.014
y -0.242 4.847 -0.009
z -0.014 -0.009 3.670


<r2> (average value of r2) Å2
<r2> 0.000
(<r2>)1/2 0.000